C# XPath id() not working?

C# XPath id() not working?

By : PatternMan
Date : January 02 2021, 06:48 AM
seems to work fine Use XmlDocument.GetElementById to get the XmlElement with the specified ID, e.g.:
code :

Share : facebook icon twitter icon
XPath Expression must evaluate to a node-set with OK XPath Path (Tested with online XPath tester and Oxygen)

XPath Expression must evaluate to a node-set with OK XPath Path (Tested with online XPath tester and Oxygen)

By : user1574121
Date : March 29 2020, 07:55 AM
Hope this helps The program I am working on is having a null reference exception whenever it tries to delete the node. , Why don't you change your xpath to this:
code :
InstalledList.SelectSingleNode(string.Format("/packages/installed/sampleapp [@title='{0}']", uninstallernodename));
InstalledList.SelectSingleNode(string.Format("/packages/installed/* [@title='{0}']", uninstallernodename));
        XmlNode node = doc.SelectSingleNode(xpath);

        XmlNode parent = node.ParentNode;
PHP, XPath and SimpleXML - XPath not working

PHP, XPath and SimpleXML - XPath not working

By : Panchakshari RS
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I have the following PHP and XML: , See the below:
code :
// name only
$name = $simpleXmlEle->xpath("./item[1]/name");
echo $name[0], PHP_EOL;

// id only
$id = $simpleXmlEle->xpath("./item[2]/@id");
echo $id[0], PHP_EOL;
Array ( [0] => SimpleXMLElement Object ( [0] => Item A ) )
Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 34 ) ) )
XPath query working in XPath tester, but not in VB.NET

XPath query working in XPath tester, but not in VB.NET

By : PatSaunders
Date : March 29 2020, 07:55 AM
I hope this helps . It isn't clear how you did the test in XPath tester (or what exactly the XPath expression you tested), but I think your code is fair to fail because it is trying to get node having path configuration -> Status -> Status -> ElementOne which clearly doesn't exist :
code :
Dim xmlNode As XmlElement = TryCast(doc.SelectSingleNode("/configuration/Status"), XmlElement)
Dim xpath = "/Status/ElementOne[@ID='1234']"
Dim xpath = "ElementOne[@ID='1234']"
Dim xpath = "./ElementOne[@ID='1234']"
Dim xmlNode As XmlElement = doc.SelectSingleNode("/configuration/Status/ElementOne[@ID='1234']")
XPath expression for javax.xml.xpath not working

XPath expression for javax.xml.xpath not working

By : loradorado
Date : March 29 2020, 07:55 AM
I hope this helps you . to VGR I was able to get to know the problem. The website, where those Xpath expressions were not working, was a namespace aware website with a html tag constructed like this:
As I am using HtmlCleaner, I used the following code:
code :
HtmlCleaner cleaner = new HtmlCleaner();
CleanerProperties props = cleaner.getProperties();
TagNode mainNode = cleaner.clean(htmlString);
public TagNode removeNamespaceFromHtmlTag(TagNode htmlNode) {
    return htmlNode;
Xpath is not working with XML::Twig::XPath::Elt

Xpath is not working with XML::Twig::XPath::Elt

By : 李文祥
Date : March 29 2020, 07:55 AM
I hope this helps you . The //ChildB/@key xpath expression means that it starts at the root element and looks in any element for an element ChildB and the attribute @key.
It's confusing that your twig $constraint[0] is not completely taken out of the tree. It's like a view on some part of the full document tree, so the // actually looks in the full tree. It starts at root of the document, not at the element.
code :
#                                     V
my $child_key = $constraint[0]->find('.//ChildB/@key');
Related Posts Related Posts :
  • Looking for a .Net ORM
  • Cost of SortedDictionary.Count
  • All possible combinations of n items selected randomly from a set of x items (algorithm)
  • Displaying process percentage on DOS screen
  • C# Importing Large Volume of Data from CSV to Database
  • c# control location precision
  • Printing to Zebra printer gives faint and blurry images
  • How to avoid stepping into dll code file?
  • Programmaticaly prevent Vista desktop search (WDS) from indexing pst files placed on mapped network drives
  • Is there anyway to reduce IsolatedStorage capacity in Silverlight?
  • C#: How to print a unicode string to console?
  • Frequency Table with Random Values
  • My Visual Studio 2008 web application keeps throwing a .Net error when I first run it, but refreshing fixes it
  • TCP Connection Creation and Closing Event Hooking
  • Find changed properties of a class
  • C#: Object with custom marshaller not containing data after PInvoke call
  • Version Control System with API. Need to get metrics
  • Performance comparison of Dictionaries
  • How to get process name and title of the top window on Windows / C#
  • How to save the ListView contents to a text file?
  • Why not .NET-style delegates rather than closures in Java?
  • Get CLSID by PIA interface Type
  • Visual Studio 2008 C# - Recover solution from application manifest possible?
  • Is a good practice to initialize private data members from within ctor by calling the associated properties instead of t
  • Inserting into a bitstream
  • How do you write byte[] array using log4.net
  • Clickonce + .NET client profile 4 framework + offline
  • Show form that showDialog from mainForm won't block it, but closing mainForm will close it
  • Developing a GPS car tracking system
  • dynamic log4net appender name?
  • Visual studio formatting issue
  • IndexOutOfRangeException when a stream is a multiple of the buffer size
  • How to deal with calculated values with Dependency Properties on a custom WPF control
  • counting from textbox,asp.net
  • Threading best practice when using SFTP in C#
  • how to load PDF file in website page using C#
  • Parent child class relationship design pattern
  • MessageQueue.BeginReceive() null ref error - c#
  • A C# collection, which behaves like C++ set or priority_queue?
  • Animating WPF buttons from inside a style
  • WPF Grid : GridSplitter event
  • Server 2008 Task Scheduler Mapped Drive Access C#
  • Cast problem with LINQ
  • Combo box Item source = ObservableCollection & I need a '-None-' dummy entry at the top
  • Which GUI control is suitable for this purpose?
  • Trying to access App.config file for mail settings but fails to work
  • Invoke PowerShell script from c# in runspace and get line number where error occured
  • How to show html contents with a RichTextBox?
  • FTP monitoring and downloading of new files
  • MEF + Plug-In not updating
  • Efficient handling of super wide, but not so tall, bitmap?
  • .NET 3.0 Unit Testing getting System.MethodAccessException calling .NET 2.0
  • Web Services vs Persistent Sockets
  • How do I dynamically reference incremented properties in C#?
  • Windows Installer (C#) error code 2869
  • Exception "The operation is not valid for the state of the transaction" using TransactionScope
  • Tools for listing database accesses from .NET code
  • Excel VSTO set selection
  • Creating a subscription based website in ASP.NET
  • Merging Resources Dictionaries
  • shadow
    Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk